GIB doesn't understand redouble auctions

[smerriman]

Ignore my crazy bidding - this was Robot Reward, where you tend to want partner to be declarer always - but:

 

[hv=http://www.bridgebase.com/tools/handviewer.html?sn=smerriman&s=SKQ9HJ985DA93CA95&wn=Robot&w=SAJ43HKQ2D8642C42&nn=Robot&n=ST876HT64DQ5CQT63&en=Robot&e=S52HA73DKJT7CKJ87&d=s&v=n&b=15&a=PPP1D(Minor%20suit%20opening%20--%203+%20%21D%3B%2011-21%20HCP%3B%2012-22%20total%20points)D(Takeout%20double%20--%203-5%20%21C%3B%202-%20%21D%3B%203-4%20%21H%3B)R(4-%20%21D%3B%2010-11%20HCP%3B%2012-%20total%20points%3B%20opponents%20cannot%20play%20undoubled%20below%202N)1S(Length%20--%204+%20%21S%3B%2011-%20HCP%3B%2012-%20total%20points)PPD(Penalty%20--%204-%20%21D%3B%204+%20%21S%3B%2010-11%20HCP%3B%2012-%20total%20points%3B%20opponents%20cannot%20play%20undoubled%20below%202N)2C(4+%20%21C%3B%204+%20%21S%3B%2011-%20HCP%3B%2012-%20total%20points)PPD(Penalty%20--%203+%20%21C%3B%204-%20%21D%3B%204+%20%21S%3B%2010-11%20HCP%3B%2012-%20total%20points%3B%20opponents%20cannot%20play%20undoubled%20below%202N)PP2S(3-5%20%21C%3B%202-%20%21D%3B%203-4%20%21H%3B%204%20%21S%3B%2011-%20HCP%3B%2012)PPP&p=S5SKS4STC5C4CTCJS2S9SJS7SAS8H3SQD4DQDKDACAC2C6C7H9H2HTHADJD3D2D5CKC9D8C3DTD9D6S6H4H7H5HQS3H6C8HJHKCQD7H8]400|300[/hv]

 

After redoubling, ensuring the opponents can't play undoubled below 2N, and making a penalty double of 1♠.. both GIBs are happy to pass out 2♠ undoubled.

 

This isn't just an advanced robot issue. With basic robots, North doesn't bid 2♣, but if I force a 2♣ bid.. both opponents pass out 2♣ undoubled.

 

This is on top of the usual issues where after I make a redouble suggesting I want to penalise the opponents, partner often butts in with bids rather than checking if I want to penalise first.

[wbartley]

There probably isn't any actual logic in the bidding engine for, "opponents may not play undoubled below 2N". Rather, it must be enforced on a case by case basis by the poor soul responsible for maintaining the rat's nest of a bidding database.